Lighting device



FIG. 1 is a view showing a front end, top and a first side of the lighting device of the present invention, with the broken line showing for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a view showing the top of the lighting device of the present invention;

FIG. 3 is a view of a first side of the lighting device of the present invention;

FIG. 4 is a view of the bottom of the lighting device of the present invention;

FIG. 5 is a view of a second side of the lighting device of the present invention;

FIG. 6 is a view of the front end of the lighting device of the present invention; and,

FIG. 7 is a view of the back end of the lighting device of the present invention. 

We claim the ornamental design for a lighting device, as shown and described. 